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By Arnav Kumar

20 February 2026

Four long straight thin wires are held vertically at the corners A, B, Cand D of a square of side ‘a’, kept on a table and carry equal current T.The wire at A carries current in upward direction whereas the current inthe remaining wires flows in downward direction. The net magnetic fieldat the centre of the square will have the magnitude :

By Arnav Kumar

20 February 2026

The figure represents the variation of the electric potential V at a point ina region of space as a function of its position along the x-axis. A chargedparticle will experience the maximum force at :

By Arnav Kumar

20 February 2026

Two small identical metallic balls having charges q and -2q are kept far at a separation r. They are brought in contact and then separated at distance r/2. Compared to the initial force F, they will now :

By Arnav Kumar

20 February 2026

Q) A light of frequency v is incident on a metal surface whose work function is Wo. The kinetic energy of the emitted electron is K. If the frequency of the incident light is doubled, then the Kinetic Energy of the emitted electron will be?

By Arnav Kumar

20 February 2026

In a Young’s double-slit experiment, the fringe width is found to be ẞ. If the entire apparatus is immersed in a liquid of refractive index µ, the new fringe width will be?

By Arnav Kumar

20 February 2026

Q3. Corrective exercises should be done under a _____ advice and supervision.

By Arnav Kumar

18 February 2026

A cylinder of radius r is surmounted on a hemisphere of same radius. If total height of the object is 13 cm, then its inner surface area is

By Arnav Kumar

18 February 2026

nth term of the A.P.: – 1/3, 4/3, 3 ,… is

By Arnav Kumar

18 February 2026

The length of a pendulum is 70 cm and it describes an arc of length 88 cm when swings. The angle subtended by the arc at the centre is :

By Arnav Kumar

18 February 2026

The total surface area of a solid cone of radius 7 cm and slant height 25 cm, is

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Latest Posts

The figure represents the variation of the electric potential V at a point ina region of space as a function of its position along the x-axis. A chargedparticle will experience the maximum force at :

Two small identical metallic balls having charges q and -2q are kept far at a separation r. They are brought in contact and then separated at distance r/2. Compared to the initial force F, they will now :

Q) A light of frequency v is incident on a metal surface whose work function is Wo. The kinetic energy of the emitted electron is K. If the frequency of the incident light is doubled, then the Kinetic Energy of the emitted electron will be?

In a Young’s double-slit experiment, the fringe width is found to be ẞ. If the entire apparatus is immersed in a liquid of refractive index µ, the new fringe width will be?

Q3. Corrective exercises should be done under a _____ advice and supervision.

A cylinder of radius r is surmounted on a hemisphere of same radius. If total height of the object is 13 cm, then its inner surface area is

nth term of the A.P.: – 1/3, 4/3, 3 ,… is

The length of a pendulum is 70 cm and it describes an arc of length 88 cm when swings. The angle subtended by the arc at the centre is :

The total surface area of a solid cone of radius 7 cm and slant height 25 cm, is

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Assertion (A) : Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion. Reason (R): For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei, it decreases with increasing Z.

Assertion (A) : Induced emf produced in a coil will be more when the magnetic flux linked with the coil is more. Reason (R): Induced emf produced is directly proportional to the magnetic flux

A good diode checked by a multimeter should indicate :

The energy of an electron in an orbit in hydrogen atom is 3-4 eV. Its angular momentum in the orbit will be :

The radius of a nucleus of mass number 125 is

Nuclides with the same number of neutrons are called :

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